Uno y Otro
type: MusicGroup
popularity: 4
followers: 82
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x87cf57ab72702defe8458d95ffa5ccff012e59834b63ca7b1c6c9f189a3d265c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e25b97cd-42be-4b04-8f78-a87a7ac8839a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e25b97cd-42be-4b04-8f78-a87a7ac8839a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e25b97cd-42be-4b04-8f78-a87a7ac8839a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x87cf57ab72702defe8458d95ffa5ccff012e59834b63ca7b1c6c9f189a3d265c","name":"Uno y Otro","registered_at":"2026-06-21T07:14:33Z","symbol":"NIM1859432","token_address":"0xef8905d16a1f0bc6ded39a82e18815d372635f43","type":"artist","uuid":"e25b97cd-42be-4b04-8f78-a87a7ac8839a"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cf57ab72702defe8458d95ffa5ccff012e59834b63ca7b1c6c9f189a3d265c. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e25b97cd-42be-4b04-8f78-a87a7ac8839a.json and https://artists.proofprofile.net/proofs/artist/e25b97cd-42be-4b04-8f78-a87a7ac8839a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0x87cf57ab72702defe8458d95ffa5ccff012e59834b63ca7b1c6c9f189a3d265c","name":"Uno y Otro","registered_at":"2026-06-21T07:14:33Z","symbol":"NIM1859432","token_address":"0xef8905d16a1f0bc6ded39a82e18815d372635f43","type":"artist","uuid":"e25b97cd-42be-4b04-8f78-a87a7ac8839a"}
album: Volverte a Ver
  type: MusicAlbum
  date published: 2020-11-17
  track: Volverte a Ver
    type: MusicRecording
    duration: PT3M52S
    duration ms: 232698
    explicit: false
    by artist: Uno y Otro
    in album: Volverte a Ver
      type: MusicAlbum
      date published: 2020-11-17
    isrc code: AEA0D2078460
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T06:11:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x72f0c86299213258508c9a79b614e8e18797b76a375d62f5711436aadd8e1c41
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956500
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956500
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2078460
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T13:55:21Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f0c86299213258508c9a79b614e8e18797b76a375d62f5711436aadd8e1c41. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2078460.
      date published: 2026-07-03T13:55:21Z
    audio: Volverte a Ver
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 147.77
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.53
      additional property: Energy
        type: PropertyValue
        value: 0.886
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.509
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.181
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.327
      additional property: Loudness (dB)
        type: PropertyValue
        value: -0.339
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major